A sorcerers ring can be created in alchemy(skull ring+saints ashes). There are three quests that give you treasure chests. the first is a quest given by Christopher Collapsus outside Zere Rocks(granite tunnel of woe Lv. 1). The other is given to you by the king if you just go and talk to him at some stage after beating corvus(random map of ???? Lv ?). The last map is given by a boy on the large hill south of alltrades(only accessible with Sterlings Whistle). The quest involves fighting gigantes's which can be found at the Tower of Nod(north of coffinwell). You will need the rangers skill, Mercy. reward is a map(random map of ???? Lv ?).